george h.w. bush said, clinton did. george w. bush and barack obama all day. and so, while i think there are some of my own personal views about how i thought president bush handled the situation, there's how he thinks american readers might disagree with, but their sinks in that readers would be surprised about in terms of a president bush sought in terms of diplomacy with north korea, which is not normally something they would associate with president bush's views on north korea. so that was a natural thing where i could add some pain on this that perhaps other authors have written on the topic would not be able to. >> host: you don't necessarily take an ideological giving your evaluation of the other administration's. do you do give of critical review of success and failures of other administrations in dealing with the issue. one of the the basic thesis of the book is north korea is the impossible state because no one inside has been power to overthrow it and no one on the outside cares enough to risk the cost of changing it. i want to ask you about both of